Schott 157.402 KL Series 4-Point Ringlight 66mm

The Schott 157.402 is a 4-point fiber optic ringlight for Schott KL series cold light sources — a specialized alternative to the standard annular (157.420) ringlight that delivers illumination from four discrete, evenly spaced points around the 66mm ring rather than continuously around the full circumference. This four-point illumination pattern creates controlled directional shadows between the illumination points, enhancing surface texture, relief, and topographic detail that would be washed out under uniform annular ring illumination. The 4-point configuration is particularly effective for revealing surface scratches, machining marks, grain structure, embossed features, and other surface topography on specimens where shadow contrast is needed to make features visible. It can also be used to create oblique illumination effects from four directions simultaneously, providing a different contrast modality than single-arm gooseneck or full annular ring illumination. Compatible with Schott KL 1500, KL 1600, and KL 2500 cold light sources. The 66mm I.D. fits most stereo microscopes directly. Supplied new from stock, catalog number 157.402.